<!DOCTYPE html>
<html lang="en">
<head>
    <title>thenewboston</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
    <script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
</head>
<body>

    <div class="container-fluid">

        <h3>Push and pull</h3>

        <div class="row">

            <!--
                col-md-push-5 = move right 5 columns on md or greater (stay same for sm)
                else just show as normal
            -->
            <div class="col-md-5 col-md-push-5" style="background: lightgreen">
                Content A - MAIN BANNER
            </div>

            <!-- col-sm-pull-5 = move left 5 columns -->
            <div class="col-md-5 col-md-pull-5" style="background: lightcoral">
                Content B
            </div>

            <div class="col-md-2" style="background: lightblue">
                Content C
            </div>

        </div>
    </div>

</body>
</html>